yes..alibaba
i took some hydro-galaxy par meter readings
at 18" and 12" with the four 6" x 22" panels /two per 300w driver in series
so 600w over 3 x 4ft area..
18" = 425-525
and
12"= 525-785
i think 14" had the best average numbers
next is grow something under them..
didn't take any heat readings..but they were not bad when i shut them off
there is no charted grid..the high numbers are under the panels..
in between them it is fairly even ..[the lower numbers]and on the edges it falls off
ppfd = i dunno... but around 12 sq ft